CN109630049A - A kind of reverse circulation valve - Google Patents
A kind of reverse circulation valve Download PDFInfo
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- CN109630049A CN109630049A CN201811334375.6A CN201811334375A CN109630049A CN 109630049 A CN109630049 A CN 109630049A CN 201811334375 A CN201811334375 A CN 201811334375A CN 109630049 A CN109630049 A CN 109630049A
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- sliding sleeve
- reverse circulation
- circulation valve
- wall
- inner sliding
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- 239000011148 porous material Substances 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims description 37
- 230000007246 mechanism Effects 0.000 claims description 19
- 210000000078 claw Anatomy 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims 1
- 239000004576 sand Substances 0.000 abstract description 17
- 239000007788 liquid Substances 0.000 abstract description 13
- 230000015572 biosynthetic process Effects 0.000 abstract description 6
- 238000005086 pumping Methods 0.000 abstract description 6
- 238000005553 drilling Methods 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000012856 packing Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 239000010620 bay oil Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/10—Valve arrangements in drilling-fluid circulation systems
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a kind of reverse circulation valves, are related to oil field drilling completion and sand control apparatus field.The reverse circulation valve includes main body, positioning sleeve and inner sliding sleeve, positioning sleeve is set in the outside of main body, inner sliding sleeve is nested in the inside of main body, inner sliding sleeve is fixedly connected with positioning sleeve, occluding body is provided in the inner cavity of reverse circulation valve, during upper lifting pipe post reacting cycle, positioning sleeve drives the inner sliding sleeve to move downward, occluding body is abutted with the top of inner sliding sleeve, there is the first gap between inner sliding sleeve and main body inner wall, intercommunicating pore is provided in the upper portion side wall of inner sliding sleeve, there are the second gaps between occluding body and main body inner wall, the inner cavity of reverse circulation valve passes through intercommunicating pore, first gap is connected to the second gap.The problem of micro- drain structure is collectively formed in the reverse circulation valve, intercommunicating pore, the first gap and the second gap, and a small amount of liquid leaks out by micro- drain structure, avoids pumping formation when mentioning reacting cycle, so that the movement of upper lifting pipe post reacting cycle is easier.
Description
Technical field
The present invention relates to oil field drilling completion and sand control apparatus fields, and in particular to a kind of reverse circulation valve.
Background technique
Bohai Bay Oil major part oil reservoir belongs to conveying sandstone structure, and the producing well more than 90% requires to carry out sand control work
Industry, layer-by-layer filling technique are one of more safe and effective modes in marine gravel filling or pressure crack filling anti-sand operation.
Reverse circulation valve is one of the critical component in layer-by-layer filling anti-sand tool, as follows using the course of work: to fill
Cheng Zhong, reverse circulation valve is in the open state, provides common fluid channel for returning fluid's body, and sand water mixed liquid body is from filling sliding sleeve
Into screen jacket annular space, sand is stopped by screen casing, and load fluid enters washing pipe from sealed bottom pipe with holes, flows through reverse circulation valve, enters
The small annular space of packing tool is returned and is portalled into big annular space, returned out from well head；During upper lifting pipe post reacting cycle, reverse circulation valve is closed
It closes, the displacement fluid come in from big annular space, a part from pack hole enters drilling rod to replace the mortar in drilling rod, and a part is from returning out
Hole enters the small annular space of packing tool, ends after reaching reverse circulation valve, and this prevents displacement fluid leakages to stratum, is effectively ensured
Reverse circulating fluid efficiency.
In the prior art, the layer-by-layer filling anti-sand tool with reverse circulation valve always exists pumping formation when mentioning reacting cycle
The problem of, lead to the difficulty of upper lifting pipe post reacting cycle movement realization.
Summary of the invention
The purpose of the embodiment of the present invention is that providing a kind of reverse circulation valve, above mentioned with solving layer-by-layer filling anti-sand tool presence
When reacting cycle the problem of pumping formation, the difficulty of upper lifting pipe post reacting cycle movement is reduced.
In order to solve the above-mentioned technical problem, the embodiment of the invention provides a kind of reverse circulation valve, including main body, positioning sleeve and
Inner sliding sleeve, the positioning sleeve are set in the outside of the main body, and the inner sliding sleeve is nested in the inside of the main body, the interior cunning
Set is fixedly connected with the positioning sleeve, is provided with occluding body in the inner cavity of the reverse circulation valve, during upper lifting pipe post reacting cycle,
The positioning sleeve drives the inner sliding sleeve to move downward, and the occluding body is abutted with the top of the inner sliding sleeve, the inner sliding sleeve
There is the first gap between the main body inner wall, be provided with intercommunicating pore, the occluding body in the upper portion side wall of the inner sliding sleeve
There are the second gap between the main body inner wall, the inner cavity of the reverse circulation valve passes through the intercommunicating pore, first gap
It is connected to second gap.
Optionally, the support rod being provided in the inner cavity of the reverse circulation valve above the inner sliding sleeve, the closure
Body is set on the support rod, is provided with elastic mechanism between the occluding body and the upper end of the support rod, in filling shape
Under state, the occluding body is abutted with the top of the inner sliding sleeve so that the elastic mechanism is in compressive state, and upper lifting pipe post is anti-
In cyclic process, the elastic mechanism push the occluding body to move downward so that the occluding body and the inner sliding sleeve it is upper
Portion abuts.
Optionally, the main body has the first inner wall and the second inner wall positioned at upper end, and the size of second inner wall is big
In first inner wall, between the inner sliding sleeve and first inner wall, second gap is located in first gap
Between the occluding body and first inner wall, in stowing operation, the intercommunicating pore is located at the area except first inner wall
The inner cavity in domain, the reverse circulation valve is connected to by the intercommunicating pore.
Optionally, the stage portion of diameter diminution, the lower end of the positioning sleeve are provided in the lower external face of the main body
It is provided with lock ring, when the positioning sleeve moves downward so that the lock ring reaches the stage portion, the lock ring shrinks and blocks
In the stage portion.
Optionally, the inner sliding sleeve is fixedly connected with the positioning sleeve by screw, is provided on the side wall of the main body
Long hole corresponding with the screw moving range.
Optionally, the first sealing ring positioned at the long hole two sides is provided between the inner sliding sleeve and the main body inner wall
With the second sealing ring.
Optionally, there is the elastic claw of protrusion, during upper lifting pipe post reacting cycle, the elastic claw on the positioning sleeve
The sealing drum for touching filling sliding sleeve makes the positioning sleeve that inner sliding sleeve be driven to move downward.
Optionally, the positioning sleeve, which is fixed on the outer wall of the main body by shear screw, makes the reverse circulation valve
It is in the open state, during upper lifting pipe post reacting cycle, the elastic claw encounter filling sliding sleeve sealing drum move downward and
Cut the shear screw.
Optionally, the reverse circulation valve further includes sealing unit, and one end of the sealing unit and second inner wall are close
Envelope connection, the internal diameter of the sealing unit are greater than the internal diameter of first inner wall.
Optionally, the reverse circulation valve further includes the limit sleeve for fixing the support rod, the lower end of the limit sleeve
It is fastened on the junction of the main body Yu the sealing unit.
Micro- drain structure is collectively formed in the reverse circulation valve of the embodiment of the present invention, intercommunicating pore, the first gap and the second gap.Upper
During mentioning tubing string reacting cycle, the problem of a small amount of liquid leaks out by micro- drain structure, avoids pumping formation when mentioning reacting cycle,
Liquid lock effect is avoided simultaneously, so that the movement of upper lifting pipe post reacting cycle is easier.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by specification, right
Specifically noted structure is achieved and obtained in claim and attached drawing.
Detailed description of the invention
Attached drawing is used to provide to further understand technical solution of the present invention, and constitutes part of specification, with this
The embodiment of application technical solution for explaining the present invention together, does not constitute the limitation to technical solution of the present invention.
Fig. 1 is the cross section structure schematic diagram of reverse circulation valve of the embodiment of the present invention；
Fig. 2 is structural schematic diagram when reverse circulation valve shown in Fig. 1 is in close state；
Fig. 3 is the enlarged diagram of part A in Fig. 2.
Description of symbols:
1-sealing unit；2-main bodys；3-limit sleeves；
4-positioning sleeves；5-inner sliding sleeves；6-lock ring lids；
7-lock rings；8-lower contacts；9-lower covers；
14-screws；15-shear screws；16-occluding bodies；
18-elastic mechanisms；19-support rods；21-the first inner wall；
22-the second inner wall；23-long holes；24-stage portions；
25-the first gap；26-the second gap；41-elastic claws；
51-intercommunicating pores；131-the first sealing ring；132-the second sealing ring.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention
Embodiment be described in detail.It should be noted that in the absence of conflict, in the embodiment and embodiment in the application
Feature can mutual any combination.
Technology contents of the invention will be discussed in detail by specific embodiment below.
Fig. 1 is the cross section structure schematic diagram of reverse circulation valve of the embodiment of the present invention.Reverse circulation valve shown in fig. 1 is in open shape
State.As shown in Figure 1, the circulating valve includes main body 2, positioning sleeve 4 and inner sliding sleeve 5, positioning sleeve 4 is set in the outside of main body 2, interior cunning
Set 5 is nested in the inside of main body 2.Inner sliding sleeve 5 is fixedly connected with positioning sleeve 4.Support rod 19 is provided in the inner cavity of reverse circulation valve,
Support rod 19 is located at the top of inner sliding sleeve 5.Be arranged with occluding body 16 on support rod 19, the upper end of occluding body 16 and support rod 19 it
Between be provided with elastic mechanism 18.Occluding body 16 is abutted with the top of inner sliding sleeve 5 so that elastic mechanism 18 is in compressive state.Above mention
During tubing string reacting cycle, positioning sleeve 4 drives inner sliding sleeve 5 to move downward, and under the promotion of elastic mechanism 18, occluding body 16 is downward
Movement is so that reverse circulation valve is closed.
The reverse circulation valve of the embodiment of the present invention is made during upper lifting pipe post reacting cycle by the promotion of elastic mechanism 18
With the movement of occluding body 16 is made, to close reverse circulation valve, the closing process of the reverse circulation valve not will receive the influence of hole deviation,
Hole deviation is more than 60 degree even in horizontal well, and occluding body 16 still can be pushed to move for elastic mechanism 18 so that reverse circulation valve is closed,
Guarantee reacting cycle displacement fluid will not miss avoided to stratum sand control pipe sand bury, sand card phenomenon, greatly reduce sand control and apply
The risk of work.
Fig. 2 is structural schematic diagram when reverse circulation valve shown in Fig. 1 is in close state.Fig. 3 is the amplification of part A in Fig. 2
Schematic diagram.As shown in Figures 2 and 3, under reverse circulation valve closed state, occluding body 16 is still abutted with the top of inner sliding sleeve 5, interior
There is the first gap 25 between 2 inner wall of sliding sleeve 5 and main body, be provided with intercommunicating pore 51, occluding body 16 in the upper portion side wall of inner sliding sleeve 5
There is the second gap 26 between 2 inner wall of main body, the inner cavity of reverse circulation valve passes through intercommunicating pore 51, the first gap 25 and the second gap
26 connections.It is easily understood that the usual very little in the first gap 25 and the second gap 26, therefore, intercommunicating pore 51,25 and of the first gap
Micro- drain structure is collectively formed in second gap 26.During upper lifting pipe post reacting cycle, a small amount of liquid is leaked out by micro- drain structure, is kept away
When having exempted from above to mention reacting cycle the problem of pumping formation, while liquid lock effect is avoided, so that the movement of upper lifting pipe post reacting cycle is more held
Easily.
In the present embodiment, there is also gap between occluding body 16 and support rod 19, which can also form micro- drain structure
A part, a small amount of liquid can also gap between occluding body 16 and support rod 19 leak out.
In the present embodiment, as shown in figure 3, the upper end of the medial surface of inner sliding sleeve 5 has an oblique seat surface 52, occluding body 16 it is outer
Surface is connected on oblique seat surface 52, to realize that occluding body 16 and the top of inner sliding sleeve 5 abut.It is easily understood that in order to make
Obtaining occluding body 16 can slide along support rod 19, and there are minim gap, oblique seat surfaces 52 between usual occluding body 16 and support rod 19
Setting certain guiding role can be provided for the movement of occluding body 16, guarantee that occluding body 16 can accurately be connected to inner sliding sleeve
5 top prevents from leading to poor sealing between occluding body 16 and inner sliding sleeve 5 since occluding body 16 deviates.
The reverse circulation valve further includes sealing unit 1 and lower contact 8.Sealing unit 1 and lower contact 8 respectively with main body 2 two
End cap connects in succession.Main body 2 has the first inner wall 21 and the second inner wall 22 positioned at upper end, and the size of the second inner wall 22 is greater than first
The size of inner wall 21 is connected between second inner wall 22 and the first inner wall 21 by tapered wall transition.The lower end of sealing unit 1 and the
Two inner walls 22 are tightly connected.The internal diameter of sealing unit 1 is greater than the internal diameter of the first inner wall 21.Under the upper end of lower contact 8 and main body 2
End is tightly connected.The lower end of lower contact 8 is connect with lower cover 9.
In reverse circulation valve closed state, as shown in Figures 2 and 3, inner sliding sleeve 5 is nested in the inside of main body 2, thus, first
Gap 25 is located between inner sliding sleeve 5 and the first inner wall 21, and the second gap 26 is located between occluding body 16 and the first inner wall 21.Anti-
It recycles in the valve opening state, that is, stowing operation, as shown in Figure 1, intercommunicating pore 51 is located at the region except the first inner wall 21, at this point, instead
The inner cavity of circulating valve is connected to by intercommunicating pore 51.
Liquid is leaked out between inner sliding sleeve 5 and main body 2 in order to prevent, is provided between 2 inner wall of inner sliding sleeve 5 and main body
One sealing ring 131 and the second sealing ring 132.In the present embodiment, the first sealing ring 131 and the second sealing ring 132 are arranged at
On the outer surface of inner sliding sleeve 5, the first sealing ring 131 and the second sealing ring 132 make close between inner sliding sleeve 5 and the first inner wall 21
Envelope avoids first gap 25 leakage of the liquid for flowing through reverse circulation valve between inner sliding sleeve 5 and the first inner wall 21.
As shown in Figure 1, positioning sleeve 4 is set in the outside of main body 2, positioning sleeve 4 is fixed on main body 2 by shear screw 15
On outer wall.It can further be seen from figure 1 that positioning sleeve 4 is fixedly connected with inner sliding sleeve 5 by screw 14, in order to avoid main body 2 is to interior
The movement of sliding sleeve 5 has an impact, and long hole 23 is provided on the side wall of main body 2, and long hole 23 is corresponding with the moving range of screw 14.
Screw 14 being arranged circumferentially along inner sliding sleeve 5, correspondingly set long hole 23 quantity and position.Long hole 23 is located at first
Between sealing ring 131 and the second sealing ring 132, thus, liquid will not be revealed from long hole 23.Positioning sleeve 4 and inner sliding sleeve 5 pass through
Screw 14 across long hole 23 is fixedly connected, thus, inner sliding sleeve 5 is fixed on position as shown in Figure 1, so that at reverse circulation valve
In opening state.In Fig. 1, the upper end of inner sliding sleeve 5 is protruded except the first inner wall 21.Intercommunicating pore 51 is upper close to inner sliding sleeve 5
End, state shown in Fig. 1, intercommunicating pore 51 are located at except the first inner wall 21, and the inner cavity of reverse circulation valve is connected to by intercommunicating pore 51.
Reverse circulation valve further includes the occluding body 16 positioned at inner cavity, and in the present embodiment, occluding body 16 is steel ball, in other realities
It applies in example, occluding body can also be the other shapes such as cone.Support rod 19, occluding body 16 are provided in the inner cavity of reverse circulation valve
It is set on support rod 19.Compressible elastomeric mechanism 18, example are provided between the upper end of occluding body 16 and the upper end of support rod 19
Such as spring.Under the action of elastic mechanism 18, occluding body 16 can be moved along support rod 19, thus, support rod 19 is to block
The movement of body 16 provides guiding role, guarantees that occluding body 16 can accurately close reverse circulation valve.The lower surface of occluding body 16 with
The upper surface abutting contact of inner sliding sleeve 5, under the withstanding effect of inner sliding sleeve 5, elastic mechanism 18 is in compressive state, such as Fig. 1 institute
Show.
Under opening state shown in Fig. 1, load fluid enters washing pipe from the sealing pipe with holes being located at below reverse circulation valve, from
Reverse circulation valve lower end enters in reverse circulation valve.The upper of reverse circulation valve is flow to by intercommunicating pore 51 into the load fluid in reverse circulation valve
End as shown in Figure 1, entering the small annular space of packing tool to flow through reverse circulation valve, and is returned and is portalled into big annular space, returns out well
Mouthful.In the process, reverse circulation valve provides unobstructed fluid channel for returning fluid's body.
As depicted in figs. 1 and 2, there is the elastic claw 41 of protrusion on the outer surface of positioning sleeve 4.In upper lifting pipe post reacting cycle mistake
Cheng Zhong, elastic claw 41 can encounter the sealing drum of filling sliding sleeve, to cut shear screw 15.After shear screw 15 is cut,
Under the interaction of elastic claw and sealing drum, positioning sleeve 4 is moved downward along the axial direction of main body 2.Due to inner sliding sleeve 5 and positioning
Set 4 is fixedly connected by screw 14, thus, inner sliding sleeve 5 can also move downwardly together with positioning sleeve 4.Long hole 23 and screw 14
Moving range be adapted, therefore, positioning sleeve 4 can drive inner sliding sleeve 5 to move down along place, ensure that the suitable of reverse circulation valve
Benefit is closed.
During inner sliding sleeve 5 is moved down with positioning sleeve 4, under the action of elastic mechanism 18, occluding body 16 along
Support rod 19 moves down, so that the lower surface of occluding body 16 is connected to always on the upper surface of inner sliding sleeve 5.In the present embodiment
In, as shown in Fig. 2, the upper end of inner sliding sleeve 5 is located in 21 range of the first inner wall when reverse circulation valve is in close state.At this
In embodiment, the maximum gauge of occluding body 16 less than the first inner wall 21 size, therefore, in the impetus of elastic mechanism 18
Under, occluding body 16 enters in 21 range of the first inner wall and is connected on the upper surface of inner sliding sleeve 5 always.Under Fig. 2 state, connection
Hole 51 is stopped by the first inner wall 21, realizes the closing of reverse circulation valve.
In the present embodiment, occluding body 16 realizes the closing of reverse circulation valve under the impetus of elastic mechanism 18, no
It realizes and closes by the gravity of steel ball again, thus, the closing process of the reverse circulation valve not will receive the influence of hole deviation, super in hole deviation
60 degree are crossed even in horizontal well, elastic mechanism 18 still can push the movement of occluding body 16 with guarantee occluding body 16 always with interior cunning
The upper surface of set 5 effectively abuts, and then realizes the closing of reverse circulation valve, guarantees that reacting cycle displacement fluid will not be missed to stratum, keeps away
The sand for having exempted from sand control pipe buries, sand card phenomenon, greatly reduces the risk of sand control construction.
In the closed state of reverse circulation valve, as shown in Fig. 2, due to occluding body 16 diameter less than the first inner wall 21 ruler
It is very little, the first gap 25 is formed between the outer wall of inner sliding sleeve 5 and the first inner wall 21 of main body 2, therefore, still has a small amount of liquid
By the second gap 26 leakage between intercommunicating pore 51, the first gap 25, occluding body 16 and main body 2, thus attached in occluding body 16
Closely form micro- drain structure.During upper lifting pipe post reacting cycle, a small amount of liquid is leaked out by micro- drain structure, is avoided and is mentioned counter follow
When ring the problem of pumping formation, while liquid lock effect is avoided, so that the movement of upper lifting pipe post reacting cycle is easier.
After reverse circulation valve is closed, in order to avoid external force causes inner sliding sleeve 5 and the upward play of positioning sleeve 4 to lead to reverse circulation valve
Close it is unstable, as depicted in figs. 1 and 2, be provided on the lower end outer surface of main body 2 diameter diminution stage portion 24.Positioning sleeve 4
Lower end be provided with lock ring 7 and the lock ring lid 6 for covering lock ring 7.When positioning sleeve 4 moves downward until lock ring 7 moves to platform
When at rank portion 24, lock ring 7 shrinks and is stuck in stage portion 24, to prevent the upward play of positioning sleeve 4, ensure that reverse circulation valve closes
The stability of closed state.
It can further be seen from figure 1 that in the present embodiment, reverse circulation valve further includes limit sleeve 3, support rod 19 passes through limit
Set 3 is arranged in the inner cavity of sealing unit 1, and the lower end of limit sleeve 3 is fastened on the junction of main body 2 Yu sealing unit 1, thus
It ensure that the stability of limit sleeve 3, and then ensure that the stability of support rod 19.The internal diameter of limit sleeve 3 is greater than the first inner wall 21
Diameter, therefore, in the opening state of reverse circulation valve, when region except the upper end of inner sliding sleeve 5 is located at the first inner wall 21, even
Through-hole 51 not will receive the interference of limit sleeve 3 and influence to open effect.
In the description of the embodiment of the present invention, it is to be understood that the side of the instructions such as term "inner", "outside", "upper", "lower"
Position or positional relationship are to be based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description of the present invention and simplification of the description,
Rather than the device or element of indication or suggestion meaning must have a particular orientation, be constructed and operated in a specific orientation, because
This is not considered as limiting the invention.
In the description of the embodiment of the present invention, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
Although disclosed herein embodiment it is as above, the content only for ease of understanding the present invention and use
Embodiment is not intended to limit the invention.Technical staff in any fields of the present invention is taken off not departing from the present invention
Under the premise of the spirit and scope of dew, any modification and variation, but the present invention can be carried out in the form and details of implementation
Scope of patent protection, still should be subject to the scope of the claims as defined in the appended claims.
Claims (10)
1. a kind of reverse circulation valve, which is characterized in that including main body, positioning sleeve and inner sliding sleeve, the positioning sleeve is set in the master
The outside of body, the inner sliding sleeve are nested in the inside of the main body, and the inner sliding sleeve is fixedly connected with the positioning sleeve, described anti-
It is provided with occluding body in the inner cavity of circulating valve, during upper lifting pipe post reacting cycle, the positioning sleeve drives the inner sliding sleeve downward
Movement, the occluding body are abutted with the top of the inner sliding sleeve, are had between first between the inner sliding sleeve and the main body inner wall
Gap is provided with intercommunicating pore in the upper portion side wall of the inner sliding sleeve, and there are between second between the occluding body and the main body inner wall
The inner cavity of gap, the reverse circulation valve is connected to by the intercommunicating pore, first gap with second gap.
2. reverse circulation valve according to claim 1, which is characterized in that be provided in the inner cavity of the reverse circulation valve positioned at institute
The support rod above inner sliding sleeve is stated, the occluding body is set on the support rod, and the occluding body is upper with the support rod
Elastic mechanism is provided between end, under filling state, the occluding body is abutted with the top of the inner sliding sleeve so that the bullet
Property mechanism be in compressive state, during upper lifting pipe post reacting cycle, the elastic mechanism push the occluding body to move downward with
So that the occluding body is abutted with the top of the inner sliding sleeve.
3. reverse circulation valve according to claim 1, which is characterized in that the main body has the first inner wall and positioned at upper end
Second inner wall, the size of second inner wall are greater than first inner wall, first gap be located at the inner sliding sleeve with it is described
Between first inner wall, second gap is between the occluding body and first inner wall, in stowing operation, the company
Through-hole is located at the region except first inner wall, and the inner cavity of the reverse circulation valve is connected to by the intercommunicating pore.
4. reverse circulation valve according to claim 1, which is characterized in that be provided with diameter in the lower external face of the main body
The lower end of the stage portion of diminution, the positioning sleeve is provided with lock ring, when the positioning sleeve moves downward so that the lock ring reaches
When the stage portion, the lock ring shrinks and is stuck in the stage portion.
5. reverse circulation valve according to claim 1, which is characterized in that the inner sliding sleeve and the positioning sleeve are solid by screw
It is fixed to connect, long hole corresponding with the screw moving range is provided on the side wall of the main body.
6. reverse circulation valve according to claim 5, which is characterized in that be arranged between the inner sliding sleeve and the main body inner wall
There are the first sealing ring and the second sealing ring positioned at the long hole two sides.
7. reverse circulation valve according to claim 1, which is characterized in that there is the elastic claw of protrusion on the positioning sleeve,
During upper lifting pipe post reacting cycle, the sealing drum that the elastic claw encounters filling sliding sleeve make the positioning sleeve drive inner sliding sleeve to
Lower movement.
8. reverse circulation valve according to claim 7, which is characterized in that the positioning sleeve is fixed on described by shear screw
Make the reverse circulation valve in the open state on the outer wall of main body, during upper lifting pipe post reacting cycle, the elastic claw
The sealing drum for encountering filling sliding sleeve moves downward and cuts the shear screw.
9. reverse circulation valve according to claim 3, which is characterized in that the reverse circulation valve further includes sealing unit, described
One end of sealing unit and second inner wall are tightly connected, and the internal diameter of the sealing unit is greater than the interior of first inner wall
Diameter.
10. reverse circulation valve according to claim 9, which is characterized in that the reverse circulation valve further includes for described in fixation
The limit sleeve of support rod, the lower end of the limit sleeve are fastened on the junction of the main body Yu the sealing unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811334375.6A CN109630049B (en) | 2018-11-09 | 2018-11-09 | Reverse circulation valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811334375.6A CN109630049B (en) | 2018-11-09 | 2018-11-09 | Reverse circulation valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109630049A true CN109630049A (en) | 2019-04-16 |
| CN109630049B CN109630049B (en) | 2021-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811334375.6A Active CN109630049B (en) | 2018-11-09 | 2018-11-09 | Reverse circulation valve |
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| Country | Link |
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| CN (1) | CN109630049B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110080738A (en) * | 2019-05-06 | 2019-08-02 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Dividing based on the radio frequency identification communication technology surveys process pipe string and method |
| CN115387757A (en) * | 2022-08-30 | 2022-11-25 | 中国石油天然气集团有限公司 | Circulating valve |
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